Finding the Fourth Proportional to 42,760.68, 64,106.44 and 17,819.48

Step by Step Solution

1. Step 1: Write the proportion equation
   42,760.68 : 64,106.44 = 17,819.48 : x
2. Step 2: Convert to fraction form
   42,760.68/64,106.44 = 17,819.48/x
3. Step 3: Cross multiply
   42,760.68x = 64,106.44 × 17,819.48
4. Step 4: Simplify right side
   42,760.68x = 1,142,343,425.45
5. Step 5: Solve for x
   x = 1,142,343,425.45/42,760.68
6. Step 6: Final answer
   x = 26,714.81